Service difficulty report · Gusset · Boeing 7377H4

Difficulty date
January 24, 2023
Submitted
March 6, 2023
Operation
Air carrier
Aircraft
N955WN
Make and model
Boeing 7377H4
Aircraft serial
36671
Aircraft time
38,739 hours, 23,607 cycles
Part
Gusset
Condition
Cracked
Location
Zn 100 Fus Lower
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

CRACK ON FWD CARGO BAY GUSSET AT BS 500D STRINGER 21L.<[01] NO FOUND ALLOWABLE DAMAGE LIMITS ON SRM; MUST BE REPLACED IAW SRM 51-10-02 PARAGRAPH 9;[02] REMOVED GUSSET AT B/S 500D STRINGER 21L IAW SRM 51-40-02;[03] LOCATED AND DRILLED NEW GUSSET AT B/S 500D STRINGER 21L P/N 143A9481-9 LOT# 1505753-8 IAW SRM 51-40-05 AND DWG 143A7902 REV:- OK TO INSTALL;[04] VERIFIED STEP 1 AND 3 AND OK TO INSTALL GIVEN.;[05] INSTALLED NEW GUSSET AT B/S 500D STRINGER 21L P/N 143A9481-9 IAW SRM 51-40-02 AND DWG 143A7902 REV:-;[06] VERIFIED CORRECTIVE ACTION #5<BR>VERIFIED MEASUREMENTS

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